Supporting documents for BC applications

[Tre]

Dear experts,
I am making my application for British citizenship. In Section 10 (Supporting documents - page 31 of the latest application form), it is stated that I will need to provide evidence of National Insurance contributions covering the relevant (5-year) period which includes:
- payslips
- P60's
- Letters from employers confirming I have worked in their employment including start and finish dates
Do I need to provide all of these 3 supporting documents or one of them is sufficient? I am a bit confused as if I need to submit all the payslips for the whole 60 months, the application file would be too heavy. I have already got the letters from my employers (including the current one). Thank you very much and look for ward to hearing from you soon.
Best regards,

[alterhase58]

Only one of the three types of document NOT all of them.
Easiest would be letter from employer(s) especially if you have been with one or two for a long time.
As you already have letters then that's sufficient.

[Tre]

Thank you very much for your response. I have one more question and hope you can clarify it for me. In Question 1.49 I need to state my Tax reference number. Is this the Tax code such as 1185L?
Best regards

[CR001]

No it isn't your tax code. It is the employer tax reference number which should be in your P60 or ask your HR.

[Tre]

Thank you very much. This is very helpful.